TWI515309B - 高強度熱軋鋼板及其製造方法 - Google Patents

高強度熱軋鋼板及其製造方法 Download PDF

Info

Publication number
TWI515309B
TWI515309B TW103103041A TW103103041A TWI515309B TW I515309 B TWI515309 B TW I515309B TW 103103041 A TW103103041 A TW 103103041A TW 103103041 A TW103103041 A TW 103103041A TW I515309 B TWI515309 B TW I515309B
Authority
TW
Taiwan
Prior art keywords
less
steel sheet
rolled steel
hot
strength hot
Prior art date
Application number
TW103103041A
Other languages
English (en)
Chinese (zh)
Other versions
TW201437389A (zh
Inventor
中島勝己
山崎和彦
上力
Original Assignee
杰富意鋼鐵股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杰富意鋼鐵股份有限公司 filed Critical 杰富意鋼鐵股份有限公司
Publication of TW201437389A publication Critical patent/TW201437389A/zh
Application granted granted Critical
Publication of TWI515309B publication Critical patent/TWI515309B/zh

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0426Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0463Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/16Ferrous alloys, e.g. steel alloys containing copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0224Two or more thermal pretreatments
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26After-treatment
    • C23C2/28Thermal after-treatment, e.g. treatment in oil bath
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/004Dispersions; Precipitations
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
TW103103041A 2013-01-31 2014-01-28 高強度熱軋鋼板及其製造方法 TWI515309B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013016455A JP5821864B2 (ja) 2013-01-31 2013-01-31 バーリング加工性に優れた高強度熱延鋼板およびその製造方法

Publications (2)

Publication Number Publication Date
TW201437389A TW201437389A (zh) 2014-10-01
TWI515309B true TWI515309B (zh) 2016-01-01

Family

ID=51261978

Family Applications (1)

Application Number Title Priority Date Filing Date
TW103103041A TWI515309B (zh) 2013-01-31 2014-01-28 高強度熱軋鋼板及其製造方法

Country Status (7)

Country Link
US (1) US20150368739A1 (de)
EP (1) EP2952604B1 (de)
JP (1) JP5821864B2 (de)
KR (1) KR101827750B1 (de)
CN (1) CN104968820A (de)
TW (1) TWI515309B (de)
WO (1) WO2014119260A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6699307B2 (ja) * 2016-04-08 2020-05-27 日本製鉄株式会社 熱延鋼板とその製造方法
EP3516085B1 (de) 2016-09-22 2020-07-08 Tata Steel IJmuiden B.V. Verfahren zur herstellung eines warmgewalzten hochfesten stahlblechs mit hervorragender streckungsformbarkeit und kantenermüdungsleistung
KR101899674B1 (ko) 2016-12-19 2018-09-17 주식회사 포스코 저온역 버링성이 우수한 고강도 강판 및 이의 제조방법
JP7368763B2 (ja) * 2020-02-06 2023-10-25 日本製鉄株式会社 熱延鋼板及びその製造方法
CN115427589A (zh) * 2020-04-22 2022-12-02 蒂森克虏伯钢铁欧洲股份公司 热轧扁钢产品及其生产方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3425288B2 (ja) 1996-02-06 2003-07-14 新日本製鐵株式会社 加工性に優れた400〜800N/mm2級高強度熱延鋼板及びその製造方法
EP1318205A4 (de) * 2000-06-20 2005-08-03 Jfe Steel Corp Dünnes stahlblech und entsprechendes herstellungsverfahren
JP3790135B2 (ja) 2000-07-24 2006-06-28 株式会社神戸製鋼所 伸びフランジ性に優れた高強度熱延鋼板およびその製造方法
CN100335670C (zh) * 2002-02-07 2007-09-05 杰富意钢铁株式会社 高强度钢板及其制造方法
AU2003284496A1 (en) * 2002-12-24 2004-07-22 Nippon Steel Corporation High strength steel sheet exhibiting good burring workability and excellent resistance to softening in heat-affected zone and method for production thereof
JP4837426B2 (ja) * 2006-04-10 2011-12-14 新日本製鐵株式会社 バーリング加工性に優れた高ヤング率薄鋼板及びその製造方法
JP2008274416A (ja) * 2007-03-30 2008-11-13 Nippon Steel Corp 疲労特性と伸びフランジ性に優れた熱延鋼板およびその製造方法
US20090301613A1 (en) * 2007-08-30 2009-12-10 Jayoung Koo Low Yield Ratio Dual Phase Steel Linepipe with Superior Strain Aging Resistance
JP4998755B2 (ja) * 2009-05-12 2012-08-15 Jfeスチール株式会社 高強度熱延鋼板およびその製造方法
JP5423191B2 (ja) * 2009-07-10 2014-02-19 Jfeスチール株式会社 高強度鋼板およびその製造方法
JP5041084B2 (ja) * 2010-03-31 2012-10-03 Jfeスチール株式会社 加工性に優れた高張力熱延鋼板およびその製造方法
JP5041083B2 (ja) * 2010-03-31 2012-10-03 Jfeスチール株式会社 加工性に優れた高張力溶融亜鉛めっき鋼板およびその製造方法
JP5609786B2 (ja) 2010-06-25 2014-10-22 Jfeスチール株式会社 加工性に優れた高張力熱延鋼板およびその製造方法
CN103429779B (zh) * 2011-03-18 2015-06-03 新日铁住金株式会社 热轧钢板及其制造方法
MX338997B (es) * 2011-03-28 2016-05-09 Nippon Steel & Sumitomo Metal Corp Placa de acero laminada en frio y metodo de produccion de la misma.
US9587287B2 (en) * 2011-03-31 2017-03-07 Nippon Steel and Sumitomo Metal Corporation Bainite-containing-type high-strength hot-rolled steel sheet having excellent isotropic workability and manufacturing method thereof
JP5754279B2 (ja) * 2011-07-20 2015-07-29 Jfeスチール株式会社 温間成形用高強度鋼板およびその製造方法
JP5541263B2 (ja) * 2011-11-04 2014-07-09 Jfeスチール株式会社 加工性に優れた高強度熱延鋼板およびその製造方法
JP5838796B2 (ja) * 2011-12-27 2016-01-06 Jfeスチール株式会社 伸びフランジ性に優れた高強度熱延鋼板およびその製造方法
JP5610094B2 (ja) * 2011-12-27 2014-10-22 Jfeスチール株式会社 熱延鋼板およびその製造方法
EP2808413B1 (de) * 2012-01-26 2017-04-26 JFE Steel Corporation Hochfestes heissgewalztes stahlblech und verfahren zu seiner herstellung
JP5618431B2 (ja) * 2013-01-31 2014-11-05 日新製鋼株式会社 冷延鋼板およびその製造方法

Also Published As

Publication number Publication date
TW201437389A (zh) 2014-10-01
EP2952604A4 (de) 2016-02-24
KR101827750B1 (ko) 2018-02-09
JP2014148697A (ja) 2014-08-21
EP2952604B1 (de) 2020-01-15
EP2952604A1 (de) 2015-12-09
US20150368739A1 (en) 2015-12-24
WO2014119260A1 (ja) 2014-08-07
KR20150095923A (ko) 2015-08-21
CN104968820A (zh) 2015-10-07
JP5821864B2 (ja) 2015-11-24

Similar Documents

Publication Publication Date Title
TWI518186B (zh) 高強度熱軋鋼板及其製造方法
TWI609089B (zh) High-strength cold-rolled steel sheet, high-strength hot dip galvanized steel sheet, and high-strength alloyed hot dip galvanized steel sheet
TWI460307B (zh) 加工性優良的高張力熱浸鍍鋅鋼板及其製造方法
JP5574070B1 (ja) 熱延鋼板およびその製造方法
KR101402365B1 (ko) 시효성 및 베이킹 경화성이 우수한 냉연 강판 및 그 제조 방법
TWI518187B (zh) 高強度熱軋鋼板及其製造方法
CN107923013B (zh) 高强度钢板及其制造方法
WO2011122031A1 (ja) 加工性に優れた高張力熱延鋼板およびその製造方法
JP2010248565A (ja) 伸びフランジ性に優れた超高強度冷延鋼板およびその製造方法
TWI515309B (zh) 高強度熱軋鋼板及其製造方法
KR102277396B1 (ko) 오스테나이트계 매트릭스를 가지는 twip 강 시트
US11414721B2 (en) Method for the manufacture of TWIP steel sheet having an austenitic matrix
WO2014178358A1 (ja) 亜鉛めっき鋼板及びその製造方法
JP4293020B2 (ja) 穴広げ性に優れる高強度鋼板の製造方法
JP5310920B2 (ja) 耐時効性と焼付き硬化性に優れた高強度冷延鋼板
TWI461542B (zh) 冷軋鋼板及其製造方法
JP2019059963A (ja) 低降伏比を有する鋼板の製造方法

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees